Randomized Trial Study on Ramosetron and Dexamethasone in the Prevention of Nausea and Vomiting after Laparoscopic Cholecystectomy under General AnesthesiaFeng Liang, Fang-lei Han and Shuang QiBIO Web Conf., 8 (2017) 01048DOI: https://doi.org/10.1051/bioconf/20170801048